Sans is the laid-back skeleton from Toby Fox's 2015 role-playing game Undertale, famous for his jokes, winks and easygoing theme music. Fans turned him into a dance meme through short looped animations of his goofy shuffle, often set to bouncy chiptune remixes shared on YouTube and TikTok. The format spread because it is instantly readable: a lazy character suddenly grooving. Years later it still pops up in gaming edits and memes as shorthand for a chill, confident win.